| 1. | The weight of a deltaic pile of sediment may be so great as to depress the earth's crust, thus forming a moat around the depocentre . 三角洲沉积物堆积的重量可以大到使地壳下沉的程度,因此在沉积中心周围形成一条深沟。 |
| 2. | The formation of the nappe led to sinking of qaidam massif , nappe thrusting basin depositing persistently and the sedimentary center changed 推覆构造的形成,导致柴达木地块下沉,推覆体持续逆冲盆地持续沉积,沉积中心也变更。 |
| 3. | That the black mudstone deposited in deep water interbedded with salt and gypsum deposited in shallow water shows that during the sedimentation of 3 ( superscript rd ) and 4 ( superscript th ) sub - member , the lake level changes frequently 也正是由于湖平面变化频繁,在沉积中心的周围主要物源方向上形成一系列低水位期的砂体。 |
| 4. | Results the result on this sedimentary environment was an offshore terrigenous fresh water lake from permian of shiqanfeng formation marinecontinental transitional facies in the southern of north china 结果研究区地层自南西向北东呈现依次增厚的趋势,整体为北东方向倾斜的宽缓斜坡环境;砂岩分布特征指示物源来自南部隆起区和沉积中心在研究区以北地区。 |
| 5. | Paleogeomorphology framework is controlled by regional tectonic movement change , and it has impact on sedimentary ratio change , sedimentary center transference , and sediment preservation , at the same time , paleogeomorphology framework restricts the types of facies and plane distribution of facies zone 古地貌格局的变化受控于区域构造运动变化,影响着沉积速率变化、沉积中心迁移及沉积物保存,制约着塔中地区的沉积相类型及沉积相带的平面展布。 |
| 6. | The study shows that the basin is subsidenced in the early jurassic period and the sedimentation center lied in tiaohu depression . when it comes to the middle jurassic period , the subsidence center and the sediment center moved to the malang depression . during middle - later jurassic period , the basin subsided stably and the center of sediment and subsidence still lied in malang depression 表明早侏罗世盆地沉降、沉积中心位于条湖凹陷,中侏罗世盆地沉降中心与沉积中心向东迁移至马朗凹陷,中晚侏罗世盆地总体表现为稳定、缓慢的沉降,整个盆地的沉积、沉降中心仍在马朗凹陷。 |
| 7. | The sedimentary facies of the jurassic penglaizhen formation in the studied area can be described as follows : from the edge of the basin , the source of deposition , to the center of the sedimentation are alluvial fan facies fluvial facies fan delta facies delta facies lake facies and lake floor fan facies in turn 研究区侏罗世蓬莱镇期沉积盆地的沉积相类型分布,从盆缘近物源区至盆地沉降-沉积中心区依次为冲积扇、河流相、扇三角洲相、河控三角洲相、湖泊相和湖底扇相等沉积体系。 |
| 8. | The depositional character of zhuxiang formation in the basin reads as follows : a series of nne alluvial fan were formed along the fault . the half - deep lake to deep lake faces appeared by west side of the fault , towards the west the saucer lake faces , shore deposit and flood plain face appeared in proper order . the depositional center of lower cretaceous was formed in eastern part of the basin , and the depositional depth was pinch - out and thinning out from the east to the west 盆地内下白垩统朱巷组沉积特征表现为:沿郯庐断裂带呈北北东向广泛发育了冲积扇体系,从近断裂带西侧出现的半深湖-深湖相,向西依次为滨浅湖相到泛滥平原相的规律性分布,沉积厚度由东向西尖灭、超覆,构成了明显的东断西超的盆地构造格局,表明下白垩统的沉积中心依然位于盆地东部。 |
| 9. | Through the correlation of nww - see and sn , the thickness and limestone intervals of matuo formation gradually increase from west to east . this represent the center of sedimentation is possible located in east of the region . the matuo formation thickness gradually increase and then reduce from north to south 通过北西西?南东尔向和南北向剖面对比,玛托组地层横向变化表现为由西往东,玛托组地层厚度逐渐加大,灰岩夹层也增多,反映当时沉积中心在研究区东部,而由北往南,厚度先逐渐增大,后减小,灰岩夹层增多,由北往南的古地理格架为滨面?碳酸盐台地?斜坡环境。 |
| 10. | Bozhong area has different oil - gas accumulation characteristics from the adjace nt onshore oil fields . because of the latter thermal event and tectonic action , bo zhong area became the subsidence center and depo - center of the bohai bay basin 其具有不同于周边陆地油田的油气成藏特点,晚期的热沉降和构造活动使其成为渤海湾盆地的沉降和沉积中心,上第三系具有优于周边陆地油田的良好的储盖条件,晚期的构造活动与油气主要排烃期相匹配,为油气向上第三系圈闭中运聚提供了良好条件。 |